RU2088969C1 - Printer - Google Patents

Abstract

FIELD: computer engineering. SUBSTANCE: printer has at least one rectangular matrix 1 with needle printing units 2 and perforated-tape drive. Each matrix 1 has its length equal to width of paper tape in tape drive: printing units 2 in each matrix 1 are arranged in parallel rows where adjacent printing units are shifted apart over matrix length and width through certain distance and adjacent rows are spaced apart towards matrix length at distance corresponding to specified one multiplied by number of printing units in one row. Changeable flexible plate 4 impregnated with dye tuff is placed between each matrix 1 and paper tape and is held in cartridge through its edges. EFFECT: simplified procedure, increased printing speed, improved quality, and provision for color printing. 4 cl, 5 dwg

Description

 The invention relates to the field of computer technology (personal and other computers), and in particular to devices for outputting images using plotters with a roll-pull mechanism and devices for outputting alphanumeric information from printers.

 Two classes of devices are known: plotters with a roll-and-pull mechanism, and “inkjets,” and dot printers that convert specially encoded information into color images (graphs, drawings, etc.) and into an alphanumeric code can be attributed here.

 The closest in technical essence to the claimed device is a dot printer selected as a prototype with a needle electromagnet reversibly sliding along the guide matrix head and a ribbon dyed in n colors, on which n stripes of sections are filled with a dye filler of a certain color from set n and with a sign-synthesizing mechanism control device .

The disadvantage of this printer is the following:
limited color set when typing text and drawing shapes.

 the speed of obtaining images of alphanumeric information and figures of existing plotters and printers with reversibly moving feathers (plotters) and needle matrices (printers) is low due to the sequential way of representing a figure or its part as the pen or matrix moves along the X axis.

 The lack of reliability of these devices, because in these devices there are, as mandatory elements, expensive, because they are made with high accuracy, electronic-mechanical devices with stepper motors, providing reverse movement along the guide or a board with writing colored feathers (plotter), or a matrix of needle electromagnets (printer) . Some printers also have multi-color ribbon (LQ Prinkrs, UNICORP COMPUTERS PRT. LTD-dot printer UCPL / LQ2500 +) with a complex and high-precision tape drive device. Tape-pulling mechanisms also have insufficient reliability due to breakage, distortion of the tapes.

 In FIG. 1 shows the printer for the case when the number of matrices with needle printing units is three (i.e., the number of colors is 3, with an increase in the number of colors by 1, the next same matrix is added, etc.); in FIG. 2 matrix with needle printing units, plan view; in FIG. 3 - cassette holder of the ink plate; in FIG. 4 is a block diagram of a control device; in FIG. 5 fastening frame construction.

Thus, a multicolor printer contains n motionless fixed matrices 1 of size X * Y each, where X is its length equal to the width of the paper ribbon, and Y is the lateral size, with needle printing units 2 operating at the same time in each matrix, which are located throughout the matrix (in background) in rows oblique to the horizontal and respectively vertical image axis shift ΔX needle printing units (in the projection plane) relative to each other in the horizontal by not more than ΔX≥ d _i d _i d _i where the printing width of the needle th node (e.g., d _i 0,3 mm) and the vertical projection (projection with a side) is not less than d _i Δy ≅ d _i (Fig. 2), the impregnated colorant color N _j from the amount (a set of) flowers n and a plate 4 located under each or above each matrix of needle printing units, as well as the cassette holder of these plates 8, consisting of two fastening halves 5, 3 with rectangular windows (Fig. 3) in each half, and with framing around the inside windows with internal grooves-grooves 7 (Fig. 3) in the lower half of the cassette to hold the plate 4 (Fig. 3), a frame structure 9 for mounting on it all of the above devices, as well as a control device for the sign-synthesizing mechanism 10 (Figs. 1, 4) with a receiving register 12 15 consisting of a register horizontal row number code 12, oblique row position code reception recorder 13, letter code register, number or sign 14, image color number code register 15, with a position-time color decoder and a choice of each set of lchatyh printing units during working (impact) the state (11) in the appointment of positions in software points the next image when drawing the entire image at the lowest row.

The location of the needles along the entire matrix (projection in plan) and their shift by Δx≥ d _i and Δy ≅ d _i eliminate the need for reverse advancement of the matrix in the accepted design along the guide and this increases the speed of image execution, while ensuring image quality, and the image execution speed itself lets make permanent. The constancy of speed, in turn, makes it possible to simplify the organization of a software driver that provides print management and enhances printer reliability.

 All of the above allows us to conclude that the proposed printer has significant differences from the prototype and contains new properties, therefore, the proposed technical solution meets the criteria of "significant differences" and "novelty."

 The operation of the device.

 Let us introduce some concepts used in the text.

 A row of needles 6 (Fig. 2) one row of needle printing units in a matrix located along its length X; in this line, the needle-print nodes needed for a point image of a part of the graph (characters) in the form of dots on a line are triggered at one minimum beat and at the same time. The information for the line of needles is called the minimum line.

 Page graphic or textual information that requires a certain amount of memory in a spooled file and when printed, located on the area of a rectangle whose width is equal to the width of the roll, and the average height is equivalent to the height of an ordinary writing sheet of paper. The page is obtained for the minimum cycles (c> g), called the page control cycle.

 The matrix frame is the part of the page, which when printed has a roll width, and the height is equivalent to the matrix width Y; the matrix frame is obtained when all the rows of needles work alternately from top to bottom in the order of arrival of the minimum lines for g minimum cycles, called the matrix control cycle; m matrix cycles form a page control cycle.

 The test line is the part of the matrix frame, which, when printed, has the same width and height is equivalent to the height of the displayed character (letter); as a result of printing a test line, we get some inscription in the form of one line, complete or incomplete. A text string is obtained in t minimum cycles (t <g), called a string control loop.

 Distinguish between graphic and text modes of the printer. In graphical mode, the proposed printer operates as follows.

 When the functional program is running, a picture intended for its subsequent image on the printer is accumulated in the memory buffer file by pages. Each page can be called up when it is closed.

 Next, a piece of information, equal in size to the graphic matrix frame, from the page, under the control of the corresponding driver, enters through the usual switching bus to the matrix switching control device.

 The information comes in the form of g minimum lines, and for each minimum line it arrives "in batches" (parts) to the receive register, consisting of registers 12 15 (Fig. 4) in the control device 5 (Fig. 1) to receive this line up to until these "portions" consistently fill it. In register 12 is placed the code of the number of horizontal lines, in register 13 is the position code of the inclined row, in register 14, respectively, is the letter, number or sign code, in register 15 is the code of the color number. The total number of bits in the reception register is equal to the number of needle printing nodes of the matrix with the addition of additional bits for the location of codes of various signs; each register bit, with the exception of additional ones, includes one printing unit, and the decoder 11 decrypts the color code (number) in certain bits of this line and connects the matrix i corresponding to this color. By default, in the absence of a color code, a matrix for the image in black is connected. Then, to the beat e, those knots of the line of needles 6 are triggered, which correspond to point traces of the image located on the same line of paper. Thus, each point trace corresponds to its “own” category (cell) of the receiving registrar.

 For g minimum clock cycles of the matrix cycle, all rows of the needles 6 of the matrix are triggered sequentially from top to bottom. At the end of the matrix cycle, a part of the graphic image of the page is obtained. When m matrix cycles that form the page control cycle are triggered, a page image is obtained. A graphic image can be located either on a page or on several pages.

 In text mode, the proposed device works in the same way, but the matrix loop is subdivided into n string loops. A string of characters is printed on paper in one line loop.

 In each mode involved "their" special drivers. It should be especially noted that commands to control the printer and its modes, the formation of new characters using Esc sequences, the encoding of characters, letters, numbers, etc. are made in the accepted way. All standards for printers, such as Esc / p, remain the same. To implement the above with respect to the matrix, the encoding and transcoding of codes is performed using a special driver. The principle of encoding and transcoding is the same as in existing printers. The ability and methodology for using downloadable fonts remains the same. At the same time, a file is formed in the machine in advance, in which the letters of the required alphabet are encoded, and the file itself is stored in the printer's RAM. When encoding a new symbol, the simultaneous operation of the needles as the tape moves and their shift relative to each other to obtain the final image of this symbol is taken into account. Therefore, the binary codes of the matrix columns depicting the letter, due to the different times of the operation of the needles and their shift relative to each other, will not visually trace (similar) the displayed letter, as is the case with character encoding for existing printers. A letter (sign) will have the necessary form only after processing all encoded active needle nodes for a given letter.

 The coding of lines in the graphic mode is very simple and also takes into account the shift of the needles and the difference in their timing.

 Instead of a driver in the control device, you can use two circuit decoders, one for the graphic mode, the other for the test one. Circuit decoders can be implemented as a single chip.

 The control device is also in the form of a single chip.

 The frame design is used for mounting cassettes and matrices and composes them in a single unit. The frame design allows you to completely recline the entire block of cassettes and dies for the convenience of refueling paper tape or sheets.

 The printer allows you to reduce the execution time of a picture or text, get color images of figures and text while improving quality, eliminate expensive precision electromechanical bridles and increase the reliability of the entire device.

 The performance of a multi-color printer is improved by eliminating ink ribbon.

Claims (4)

 1. A printer containing at least one rectangular matrix with needle printing units and a roll-pull mechanism, characterized in that each rectangular matrix is made in length equal to the width of the paper ribbon of the roll-pull mechanism, needle print nodes in each matrix are arranged in parallel rows in which adjacent needle printing units are shifted relative to each other in the direction of the length and width of the rectangular matrix by a distance of ΔX and ΔY, respectively, and the distance between adjacent rows in the direction of the length of the rectangular matrix is N • ΔX, where N is the number of needle printing units in one row, between each rectangular matrix and the paper tape of the roll-pulling mechanism there is a removable elastic plate impregnated with the corresponding dye and fixed with its edges in the holder cassette.  2. The printer according to claim 1, characterized in that the cassette holder contains two half-fastened to each other with rectangular windows in the number and size of rectangular matrices, and in one of the halves along the edges of the rectangular windows are made recesses for fixing elastic plates.  3. The printer according to claim 1, characterized in that it further comprises a device for controlling the operation of matrices and needle printing units, the outputs of which are connected to the control inputs of each rectangular matrix.  4. The printer according to claim 1, characterized in that all rectangular matrices with needle-shaped printing units and a cassette holder with interchangeable elastic plates are located in a removable frame structure.

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